obviously, keeping the environment chemicals down out of the environment filtering if you will with the rain. >> officials on the ground said they remain optimistic and still in search and rescue mode. going building to building to find survivors. large slots of a neighborhood decimated by the explosion last night. >> developing news of san francisco as we continue to look at what happened earlier this morning where there was this package found near lottas just before commemoration of the 1906 earthquake. will tran as a store for san francisco. >> they still have the 1906 earthquake commemoration but not the usual place. at lottas fountain here's why. at 315 in the morning the bomb squad arrived because someone called in after noticing a suspicious package that police came down, obviously thinking about what happened in boston they set out of mothballs and robots. they went to an area across the street from lotd fttas thousand. they discovered that someone wearing dark clothing had left a bag. the or unable to find the suspect. our route for 30- 5:00 a.m. the morning because of so many